International journal of coal geology, Lyons, P. C., & Alpern, B. (1989). Coal, classification, coalification, mineralogy, trace-element chemistry, and oil and gas potential. Elsevier.
Chicago Style (17th ed.) CitationInternational journal of coal geology, Paul C. Lyons, and Boris Alpern. Coal, Classification, Coalification, Mineralogy, Trace-element Chemistry, and Oil and Gas Potential. Amsterdam: Elsevier, 1989.
MLA (9th ed.) CitationInternational journal of coal geology, et al. Coal, Classification, Coalification, Mineralogy, Trace-element Chemistry, and Oil and Gas Potential. Elsevier, 1989.
Warning: These citations may not always be 100% accurate.